guys i have a problem

[luxman2173]

i just put a new altenator and plug on my truck and when it`s idling it`s fine but when i put it reverse or drive it drops down below 13.any suggestions would greatly appreciated.

also my truck has a 700r transmission in it and it is really slow changing.driving at 50 or 60kmh put it to the floor and it won`t kick down into lower gear.i`ve heard there is some kind of adjustment on the side of the transmission.if anyone has experienced this before can you let me know what you did to fix it thanks.